Ok to use 3 year old gear oil?


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Old 12-02-18, 01:53 PM
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Ok to use 3 year old gear oil?

I have a couple unopened containers of 85W-140 gear oil for the rear axle on my truck. Is it still ok to use this lubricant after it's been sitting for three years?
 
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Old 12-02-18, 02:08 PM
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Yes..... absolutely..... especially being un-opened.

Just as an FYI.... don't save any brake fluid. Once the container is opened it has a very short shelf life.
 
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Old 12-02-18, 03:19 PM
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I have 17 year old gear oil in the axle of my 2002 truck. Hope it's okay!
 
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Old 12-02-18, 03:23 PM
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17 Years...........................Haa.......I guess I'm ok to use it then. And I did not know that about brake fluid. Thanks.
 
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Old 12-02-18, 03:24 PM
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You are making me feel bad bluesbreaker... you think I should change it? LOL
 
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Old 12-02-18, 07:48 PM
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Oh. I don't know Sleeper. Who am I to say? My personal minimum is for more frequent maintenance and repair intervals because of the hot climate out here. But some people may say I don't need to do this. 17 years seems like an awfully long time. But at least you top it off periodically.
 
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Old 12-02-18, 08:37 PM
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Top it off? I honestly have never even checked it! LOL
 
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Old 12-03-18, 02:31 AM
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X that is something you need to check, if it runs low on gear oil you can burn up the diff.
 
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Old 12-03-18, 06:04 AM
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I check the gear oil level in my rear axle every year. I just loosen the fill plug momentarily to make sure a little oil flows out. Once I had a pinion oil seal fail and I lost gear oil. Fortunately, I only needed new bearings. They were able to keep the expensive gears. This was before I started doing my own repairs.
 
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Old 12-03-18, 10:59 AM
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In many buildings gear boxes, and gearhead motors, run 12 hrs a day, some run 24 hrs per day for years, and stay just fine, yeah I know, no seasions.
Sid
 
 

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